Get The Current Domain Name With Javascript (Not the path, etc.)

Question

I plan on buying two domain names for the same site. Depending on which domain is used I plan on providing slightly different data on the page. Is there a way for me to de

Answer 1

If you want the country domain name - for example to extract  .com  from  stackoverflow.com :

(ES6):

const getCountryDomainName = () => {
  let hostName = window.location.hostname;
  let lastDotIndex = hostName.lastIndexOf('.');
  let countryDomainName = hostName.substr(lastDotIndex+1, hostName.length);
  return countryDomainName;
}

(ES5):

function getCountryDomainName() {
  let hostName = window.location.hostname;
  let lastDotIndex = hostName.lastIndexOf('.');
  let countryDomainName = hostName.substr(lastDotIndex+1, hostName.length);
  return countryDomainName;
}

Then, just use the function to assign the value to a var:

const countryDomainName = getCountryDomainName();